Bird, R.H., 1991. They Did it Yesterday. Northern Mine Research Society, Memoirs 1991 British Mining No.43 p. 35.
Ford, T.D., 2010. Derbyshire pipe veins – deep-seated speleogenesis. Cave and Karst Science, British Cave Research Association Vol.37 No.1 p. 9-10, 12.
List of Mines 1883-1888.
Mineral Statistics 1882-1893.
MJ 1838 vol. vii p. 22, 111
Nixon, D., 2011. Human and faunal remains from Blue John Cavern, Castleton, Derbyshire, UK. Cave and Karst Science, Transactions of the British Cave Research Association Vol. 38 No.2 p .93-95.
Reports of the Inspectors of Mines List of Mines 1876-1883.
Or: Blue John Caverns.